mirror of
https://github.com/golang/go
synced 2024-11-25 07:27:57 -07:00
52 lines
969 B
Go
52 lines
969 B
Go
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
type request struct {
|
|
a, b int
|
|
replyc chan int
|
|
}
|
|
|
|
type binOp func(a, b int) int
|
|
|
|
func run(op binOp, req *request) {
|
|
reply := op(req.a, req.b)
|
|
req.replyc <- reply
|
|
}
|
|
|
|
func server(op binOp, service chan *request) {
|
|
for {
|
|
req := <-service
|
|
go run(op, req) // don't wait for it
|
|
}
|
|
}
|
|
|
|
func startServer(op binOp) chan *request {
|
|
req := make(chan *request)
|
|
go server(op, req)
|
|
return req
|
|
}
|
|
|
|
func main() {
|
|
adder := startServer(func(a, b int) int { return a + b })
|
|
const N = 100
|
|
var reqs [N]request
|
|
for i := 0; i < N; i++ {
|
|
req := &reqs[i]
|
|
req.a = i
|
|
req.b = i + N
|
|
req.replyc = make(chan int)
|
|
adder <- req
|
|
}
|
|
for i := N-1; i >= 0; i-- { // doesn't matter what order
|
|
if <-reqs[i].replyc != N + 2*i {
|
|
fmt.Println("fail at", i)
|
|
}
|
|
}
|
|
fmt.Println("done")
|
|
}
|